* Error message given while cloning with --recurse-submodules has
been updated.
+ * The completion helper code now pays attention to repository-local
+ configuration (when available), which allows --list-cmds to honour
+ a repository specific setting of completion.commands, for example.
+
+ * "git mergetool" learned to offer Sublime Merge (smerge) as one of
+ its backends.
+
+ * A new hook "post-index-change" is called when the on-disk index
+ file changes, which can help e.g. a virtualized working tree
+ implementation.
+
+ * "git difftool" can now run outside a repository.
+
+ * "git checkout -m <other>" was about carrying the differences
+ between HEAD and the working-tree files forward while checking out
+ another branch, and ignored the differences between HEAD and the
+ index. The command has been taught to abort when the index and the
+ HEAD are different.
+
+ * A progress indicator has been added to the "index-pack" step, which
+ often makes users wait for completion during "git clone".
+
+ * "git submodule" learns "set-branch" subcommand that allows the
+ submodule.*.branch settings to be modified.
+
Performance, Internal Implementation, Development Support etc.
* Suggest GitGitGadget instead of submitGit as a way to submit
patches based on GitHub PR to us.
+ * The test framework has been updated to help developers by making it
+ easier to run most of the tests under different versions of
+ over-the-wire protocols.
+
+ * Dev support update to make it easier to compare two formatted
+ results from our documentation.
+
+ * The scripted "git rebase" implementation has been retired.
+
+ * "git multi-pack-index verify" did not scale well with the number of
+ packfiles, which is being improved.
+
+ * "git stash" has been rewritten in C.
+
+ * The "check-docs" Makefile target to support developers has been
+ updated.
+
+ * The tests have been updated not to rely on the abbreviated option
+ names the parse-options API offers, to protect us from an
+ abbreviated form of an option that used to be unique within the
+ command getting non-unique when a new option that share the same
+ prefix is added.
+
+ * The scripted version of "git rebase -i" wrote and rewrote the todo
+ list many times during a single step of its operation, and the
+ recent C-rewrite made a faithful conversion of the logic to C. The
+ implementation has been updated to carry necessary information
+ around in-core to avoid rewriting the same file over and over
+ unnecessarily.
+
+ * Test framework update to more robustly clean up leftover files and
+ processes after tests are done.
+
+ * Conversion from unsigned char[20] to struct object_id continues.
+
+ * While running "git diff" in a lazy clone, we can upfront know which
+ missing blobs we will need, instead of waiting for the on-demand
+ machinery to discover them one by one. The code learned to aim to
+ achieve better performance by batching the request for these
+ promised blobs.
+
Fixes since v2.21
-----------------
* Build update for SHA-1 with collision detection.
(merge 07a20f569b jk/sha1dc later to maint).
+ * Build procedure has been fixed around use of asciidoctor instead of
+ asciidoc.
+ (merge 185f9a0ea0 ma/asciidoctor-fixes later to maint).
+
+ * remote-http transport did not anonymize URLs reported in its error
+ messages at places.
+ (merge c1284b21f2 js/anonymize-remote-curl-diag later to maint).
+
+ * Error messages given from the http transport have been updated so
+ that they can be localized.
+ (merge ed8b4132c8 js/remote-curl-i18n later to maint).
+
+ * "git init" forgot to read platform-specific repository
+ configuration, which made Windows port to ignore settings of
+ core.hidedotfiles, for example.
+
+ * A corner-case object name ambiguity while the sequencer machinery
+ is working (e.g. "rebase -i -x") has been fixed.
+
+ * "git format-patch" did not diagnose an error while opening the
+ output file for the cover-letter, which has been corrected.
+ (merge 2fe95f494c jc/format-patch-error-check later to maint).
+
+ * "git checkout -f <branch>" while the index has an unmerged path
+ incorrectly left some paths in an unmerged state, which has been
+ corrected.
+
+ * A corner case bug in the refs API has been corrected.
+ (merge d3322eb28b jk/refs-double-abort later to maint).
+
+ * Unicode update.
+ (merge 584b62c37b bb/unicode-12 later to maint).
+
+ * dumb-http walker has been updated to share more error recovery
+ strategy with the normal codepath.
+
+ * A buglet in configuration parser has been fixed.
+ (merge 19e7fdaa58 nd/include-if-wildmatch later to maint).
+
+ * The documentation for "git read-tree --reset -u" has been updated.
+ (merge b5a0bd694c nd/read-tree-reset-doc later to maint).
+
+ * Code clean-up around a much-less-important-than-it-used-to-be
+ update_server_info() funtion.
+ (merge b3223761c8 jk/server-info-rabbit-hole later to maint).
+
+ * The message given when "git commit -a <paths>" errors out has been
+ updated.
+ (merge 5a1dbd48bc nd/commit-a-with-paths-msg-update later to maint).
+
+ * "git cherry-pick --options A..B", after giving control back to the
+ user to ask help resolving a conflicted step, did not honor the
+ options it originally received, which has been corrected.
+
+ * Various glitches in "git gc" around reflog handling have been fixed.
+
+ * The code to read from commit-graph file has been cleanup with more
+ careful error checking before using data read from it.
+
+ * Performance fix around "git fetch" that grabs many refs.
+ (merge b764300912 jt/fetch-pack-wanted-refs-optim later to maint).
+
+ * Protocol v2 support in "git fetch-pack" of shallow clones has been
+ corrected.
+
+ * Performance fix around "git blame", especially in a linear history
+ (which is the norm we should optimize for).
+ (merge f892014943 dk/blame-keep-origin-blob later to maint).
+
+ * Performance fix for "rev-list --parents -- pathspec".
+ (merge 8320b1dbe7 jk/revision-rewritten-parents-in-prio-queue later to maint).
+
+ * Updating the display with progress message has been cleaned up to
+ deal better with overlong messages.
+ (merge 545dc345eb sg/overlong-progress-fix later to maint).
+
+ * "git blame -- path" in a non-bare repository starts blaming from
+ the working tree, and the same command in a bare repository errors
+ out because there is no working tree by definition. The command
+ has been taught to instead start blaming from the commit at HEAD,
+ which is more useful.
+ (merge a544fb08f8 sg/blame-in-bare-start-at-head later to maint).
+
+ * An underallocation in the code to read the untracked cache
+ extension has been corrected.
+ (merge 3a7b45a623 js/untracked-cache-allocfix later to maint).
+
+ * The code is updated to check the result of memory allocation before
+ it is used in more places, by using xmalloc and/or xcalloc calls.
+ (merge 999b951b28 jk/xmalloc later to maint).
+
+ * The GETTEXT_POISON test option has been quite broken ever since it
+ was made runtime-tunable, which has been fixed.
+ (merge f88b9cb603 jc/gettext-test-fix later to maint).
+
+ * Test fix on APFS that is incapable of store paths in Latin-1.
+ (merge 3889149619 js/iso8895-test-on-apfs later to maint).
+
+ * "git submodule foreach <command> --quiet" did not pass the option
+ down correctly, which has been corrected.
+ (merge a282f5a906 nd/submodule-foreach-quiet later to maint).
+
+ * "git send-email" has been taught to use quoted-printable when the
+ payload contains carriage-return. The use of the mechanism is in
+ line with the design originally added the codepath that chooses QP
+ when the payload has overly long lines.
+ (merge 74d76a1701 bc/send-email-qp-cr later to maint).
+
+ * The recently added feature to add addresses that are on
+ anything-by: trailers in 'git send-email' was found to be way too
+ eager and considered nonsense strings as if they can be legitimate
+ beginning of *-by: trailer. This has been tightened.
+
+ * Build with gettext breaks on recent macOS w/ Homebrew when
+ /usr/local/bin is not on PATH, which has been corrected.
+ (merge 92a1377a2a js/macos-gettext-build later to maint).
+
* Code cleanup, docfix, build fix, etc.
(merge 11f470aee7 jc/test-yes-doc later to maint).
(merge 90503a240b js/doc-symref-in-proto-v1 later to maint).
(merge af91b0230c dl/ignore-docs later to maint).
(merge 59a06e947b ra/t3600-test-path-funcs later to maint).
(merge e041d0781b ar/t4150-remove-cruft later to maint).
+ (merge 8d75a1d183 ma/asciidoctor-fixes-more later to maint).
+ (merge 74cc547b0f mh/pack-protocol-doc-fix later to maint).
+ (merge ed31851fa6 ab/doc-misc-typofixes later to maint).
+ (merge a7256debd4 nd/checkout-m-doc-update later to maint).
+ (merge 3a9e1ad78d jt/t5551-protocol-v2-does-not-have-half-auth later to maint).
+ (merge 0b918b75af sg/t5318-cleanup later to maint).
+ (merge 68ed71b53c cb/doco-mono later to maint).
+ (merge a34dca2451 nd/interpret-trailers-docfix later to maint).
+ (merge cf7b857a77 en/fast-import-parsing-fix later to maint).
+ (merge fe61ccbc35 po/rerere-doc-fmt later to maint).
+ (merge ffea0248bf po/describe-not-necessarily-7 later to maint).
+ (merge 7cb7283adb tg/ls-files-debug-format-fix later to maint).
+ (merge f64a21bd82 tz/doc-apostrophe-no-longer-needed later to maint).
+ (merge dbe7b41019 js/t3301-unbreak-notes-test later to maint).
+ (merge d8083e4180 km/t3000-retitle later to maint).